Conveyor Scrapers

What it is

Conveyor scrapers are cleaning devices — typically blade systems at the head pulley or along the belt — that scrape adhering material from the cover. The term often overlaps with belt cleaners in plant language: primary scrapers, secondary scrapers and return-side ploughs. Blade materials include polyurethane for general duty and tungsten carbide for highly abrasive or high-speed belts.

Scraper performance depends on mounting stiffness, blade tip geometry, tension arrangement and compatibility with belt repairs or mechanical fasteners. A scraper that chatters or skips leaves streaks of carryback; one set too hard grooves the cover. South African bulk handlers specify scrapers as part of a carryback control strategy with chute sealing and housekeeping.

Provide belt width, speed, pulley diameter, product and fastener type when you request scraper quotes. Space constraints at the head chute are critical for primary scraper selection.

Use cases

Scrapers are installed on new belts, retrofitted under dirty return runs, and replaced when blades or mainframes wear out. Dual scraper systems are common on wet coal and sticky mineral ores. Diagonal or V-plough scrapers protect tail pulleys from material riding on the return belt — a frequent cause of pulley lagging damage on mine conveyors.

• Primary head scrapers — remove the bulk of carryback at discharge
• Secondary scrapers — finish fines after the pulley
• Return ploughs — deflect tramp material before the tail pulley
• Reversible conveyor scraper sets — cleaning in both directions

Ask suppliers about tip change intervals for your product and whether cartridges are stocked locally. Blade availability often matters more than frame design when a plant runs continuous duty. If mechanical belt fasteners are present, confirm the scraper tip can tolerate them — some carbide systems are unsuitable and will damage both fastener and blade.

Mounting steel must be rigid. Scrapers hung from thin chute walls chatter and leave stripes of carryback that look like a blade problem when the real issue is structure. Photos of the proposed mount point help suppliers include adequate brackets in the quote.

Industries

Mining, coal handling, quarries, cement and ports install scrapers on nearly every troughed belt. Process industries with sticky powders need careful blade selection to avoid smearing. Package-handling warehouses rarely need mine-style scrapers; confirm you mean bulk belt scrapers when sending an enquiry.

Harsh Mpumalanga coal and Northern Cape ore duties punish soft blades; coastal terminals add corrosion on frames and springs. Suppliers who service your commodity will recommend realistic maintenance intervals instead of optimistic brochure life. Plants with mixed wet and dry seasons should describe both conditions — a scraper that works in winter may smear in humid summer ore.

Why it matters

Without effective scrapers, carryback accumulates under the conveyor, damages idlers and creates unsafe walking conditions. Product loss and cleanup labour add up daily on long galleries. Scrapers also protect lagging and tail pulleys from material that would otherwise be nipped into the belt path. Consistent cleaning keeps inspection routes usable so crews can spot idler and belt problems early.

Compare offers on blade type, tensioning, spare tips and service support. Conveyor Quotes matches scraper and cleaner specialists; select belt cleaners or skirt rubber in the same form if your spillage problem spans discharge and loading zones. A single site walk with the right specialists often costs less than months of shovelling under the return belt.